16 and 20 inch's
I had to put in wolf hammer srings to fire the soviet stuff,no bolt mods and shoots every time
the 20" is a complete model1 upper on a grizzly lower with a dpms parts kit.The scope was somthing
I bought for my M1A but liked the open sights better so its a bit over kill for this rifle but it looks cool
the 16 is a model1 barrel and BCG,bought the striped upper and lower from a guy up north from me for $250 last year
It also has a dpms lower parts kit.
Ive had some feeding issues with the 16 but the more I shoot it the fewer they are but I negleted to mark my mags to keep track if that is the cause. It might be the ammo because when i use good usa stuff its %100.
the 20 inch hasent given me any trouble.
so far Im happy with them.
more so than my picture taking ability,
I bought a sheist load of wolf 7.62x39 last year so im set for plinken ammo.